Zoho Mail can't recognize MX records

Zoho Mail can't recognize MX records

Hello everyone!
I set the MX records in my domain properly yesterday afternoon and Zoho inboxes are working great receiving e-mails. No problem at all. However, my Control Panel doesn't recognize them and the message "You can start referring other domains only after you change the mx records of your domain" pops when I try to send an invitation. I went to MXtoolbox and my domain is configured well (http://mxtoolbox.com/SuperTool.aspx?action=mx%3amedinahoteles.com&run=toolpage) Is it anything wrong?

Thank you in advance